<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <style>
        .cat>a {
            color:orange;
            font-size:20px;
        }
    </style>
</head>
<body>
    <div class="cat">
        <a href="#">小猫</a>
        <ul>
            <li><a href="#">小狗</a></li>
            <li><a href="#">小狗</a></li>
        </ul>
    </div>
</body>
</html>